Heidelberg Materials has been granted a patent for an electrically conductive binder for heatable building elements. The binder includes cement, graphite particles with over 60% carbon content, and graphene. The patent covers specific mass percentages of each component, along with a superplasticizer and rheology modifier. GlobalData’s report on Heidelberg Materials gives a 360-degree view of the company including its patenting strategy. Buy the report here.
According to GlobalData’s company profile on Heidelberg Materials, Recycled waste cement additives was a key innovation area identified from patents. Heidelberg Materials's grant share as of January 2024 was 65%. Grant share is based on the ratio of number of grants to total number of patents.
A recently granted patent (Publication Number: US11820712B2) discloses an electrically conductive binder for cementitious mixtures used in construction applications. The binder comprises a combination of cement, graphite particles with a high carbon content, and graphene. The composition includes specific ranges of each component, with the cement content ranging from 40 to 80% by mass, graphite particles from 19.5 to 60%, and graphene from 0.005 to 0.5%. Additionally, the binder contains a sterically stabilizing superplasticizer and a rheology modifier in specified amounts relative to the mass of cement. The patent also covers variations in the composition, including the addition of metal fibers, expansive mineral agents, defoamers, and other additives to enhance the properties of the binder.
Furthermore, the patent extends to cementitious mixtures and floors incorporating the electrically conductive binder. The mixtures feature specific water/cement ratios and water/solids ratios, along with properties such as compressive strength, flexural strength, and electrical resistance. The floors with underfloor heating systems utilize the binder in a layer with electrical connections to a power source, providing a practical application for the innovative material. The patent outlines the construction of such floors using precast and prefabricated slabs, ensuring efficient and reliable installation. Overall, the patent highlights the unique composition of the electrically conductive binder and its diverse applications in construction, particularly in creating durable and functional cementitious mixtures and floors with enhanced properties.
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